ODP Leg 102, Hole 418A - Well Logging Data

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.测井数据是井眼周围地层物理特性的原位测量值，其采集分为两种场景：取心作业完成后（电缆测井，wireline logging），以及钻进过程中（随钻测井，Logging-While-Drilling, LWD）。单口井所涵盖的测量参数类型（包含电阻率、伽马辐射、声波速度、密度、井眼成像测井等），取决于其对应的科学目标与作业约束。